I was just looking at some of the Kuhne Electronics transverters. Maybe not so crazy after all.
On Mon, Sep 20, 2021 at 1:52 PM Lux, Jim <[email protected]> wrote: > On 9/20/21 10:21 AM, Andy Talbot wrote: > > It ought to be possible to find the resonance with off the shelf > equipment > > An ADF5355 synthesizer is capable of small frequency steps and will > > generate up to 13.6GHz. Use it's 2nd harmonic leakage (4th harm of the > > VCO), there is a bit coming out at 24GHz. If the synth reference input > > is derived from a 48 bit DDS like an AD9852, it can be tuned in really > > small frequency steps, far below the 1Hz steps that ought to be enough to > > spot the absorbtion. Isn't Caesium about 1Hz wide ? > > > > For detection, an amateur 24GHx converter is close enough to use. > > Copper water pipe that has been hammered into an oval can support TE01 > > modes reliably enough if you need to suppress polarisation rotation. > > > > Andy > > www.g4jnt.com > > > One might want to look at the synthesizer, odd harmonics of the output > might be better, depending on how the synthesis chain works. For > instance, maybe you want to use an 7-8 Ghz synth and pick the 3rd > harmonic. or even better, 5th harmonic of 4.76 GHz (which is well below > the 5 GHz WiFi band, so there's lots of parts) > > > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
